Question

three metal cubes of side 3cm , 4cm are melted to form larger cube find volume , total surface area and edge length of new cube formed​

Answer 1

Answer:

Volume of resulting metal cube = Volume of metal cube 1+ Volume of metal cube 2+ Volume of metal cube 3

Volume of a cube =a

3

Let side of the resulting cube be A.

So,

A³ =3³+4³+5³

A³=27+64+125

A³=216

=>A=6

Hence, length of side of the resulting metal cube is 6cm.

Total surface area of a cube =6a

2

=6×6

2

=216cm

2